The problem is that when a library is large (3-4k books) the object returned is 6 or 7 MB. Modern browsers can do up to 50MB but is it realistic to expect a 7MB datastore? Do people have libraries that large? I don't ... I downloaded a torrent of 4000 books just for testing. (This is why you see so many in my vids) I am deleting them when I am done developing because I don't need them but perhaps there are some who have that many or more. What is the average size of a library?